高压齿轮泵结合面密封性优化研究

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中图分类号：TH325 文献标志码：A 文章编号：1003-5168（2025）14-0045-05

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.14.009

The Optimization of Sealing Performance for Mating Surfaces in HighPressure Gear Pumps

LIU Shuaixiang1WANG Duanlin²ZHANG Yaming² （1.Military Representative Office of Haizhuang Stationed in Luoyang Area， Luoyang 471OOo， China; 2.Xinxiang Aviation Industry Group Co.，Ltd.， Xinxiang 453oo3， China）

Abstract： [Purposes] This paper aims to addressthe issue of oil leakage at the mating surfaces of highpressure gear pumps in field applications， improve the sealing performance of the high-pressure gear pump mating surfaces，ensure their reliable operation，and provide effctive solutions for related engineering applications.[Methods] Aiming at the leakage failure at the mating surface，this paper employs the Fault Tree Analysis （FTA）tool to identify the causes of the problem.Based on this analysis，a comprehensive and in-depth theoretical study of the influencing factors is conducted，and anaccurate physical model is established.The ANSYS software is used to simulate the deformation of the sealing end cover under actual working conditions，analyzing the impact of various factors on the sealing performance.Optimization tests are then conducted forvalidation.[Fingings] The study identifies the deformation of the sealing end cover，the compressionrate of the sealing ring，and the screw fastening method of the mating surface's sealing structure as the key factors affecting the sealing performance.By optimizing the design of the sealing structure and precisely controlling the compression rate of the sealing ring within the range of 18.1% to 27.5% ，the sealing performance has been significantly improved; the part strength has been enhanced，increasing structural stability;the diagonal/gradual tightening method forscrew fastening has effectively reduced the leakage risk at the mating surface.[Conclusions]The leakage issue at the mating surface of the high-pressure gear pump has been successfully resolved，significantly improving its sealing performance and ensuring stable，reliable operation.The research findings provide valuable guidance for the design optimization and practical application of high-pressure gears.

Keywords： high-pressure gear pump; mating surface sealing; Fault Tree Analysis （FTA）; deformation

0 引言

作为应用最广泛的容积式泵之一，外啮合齿轮泵的设计及生产技术已较为成熟。（剩余4021字）